The bodies of 20 Rohingya Muslims were pulled out of a river Thursday along the border of Myanmar and Bangladesh, across which thousands have fled this week.

As many as 18,500 Rohingya Muslims have fled their homes in Myanmar’s Rakhine state since Friday, according to the International Organization for Migration.
The exodus began last week after the Myanmar government intensified “clearance operations” following an attack by Rohingya militants on border posts that left 12 security officials dead.